Adding-machine.



1. F. KEY.

ADDING MACHINE APPLlcAloN r11D1uNEl9,1914.

Patented Sept. 19, 1916.

5 SHEETS-SHEET l- INVENTOR a/H 5 ,f7/ffl;

A TTORNE YS J. F. KEY.

ADDING MACHINE. APPLICATION Flyin 111x519, |914.

Patented Sept. 19, 1916.

5 SHEETS-SHEET 2.

ISINIFII W/TNESSES 6.96%

J. F. KEY. ADDING MACHINE.

APPLICATION FILED JUNE I9, |914.

Patented sept. 19,l 1916.

5 SHEETS-SHEET 3.

,4 TTOH/VEYS 5 SHEETS-SHEET 4.

l. F. KEY.

ADDING MACHINE.

APPLICATION FILED IuNE I9, |9I4.

Patented Sept. 19, 1916.

Patented Sept. 19, 1916.

5 SHEETS-SHEET 5 'L WIT/VESSES A TTOR/VEYR JAMES F. KEY, OF LONG BEACH,CALIFORNIA.

ADDING-MACHINE.

Specification of Letters Patent. r Patented Sept, 19, 1.916,

Application led .Tune 19, 1914. Serial No. 846,088.

To all whom t may concern.'

Be it known that I, J AMES F. KEY, a citizen of the United States, and aresident of Long Beach, in the county of Los Angeles and State ofCalifornia, have made certain new and useful Improvements in Adding-Machines, of which the following is a specification. Y

My invention relates to improvements in adding machines, and it consistsin the combinations, constructions and arrangements herein described andclaimed.

An object of .my invention is to provide a device which is simple inoperation, and which can be manufactured at small cost for vpermittingoperations that are ordinarily accomplished by machines of much greatercomplexity and which are comparatively expensive.

A further object of my invention is to provide a device of the typedescribed comprising a rotatable number disk which actuates anindicating wheel with means for holding the number disk and the wheel inleasing the wheel to permit its return to its their various positionsand for instantly reinitial position.

Other objects and advantages will appear in the following specificationand the novel featuresaof the device will be particularly pointed out inthe appended claims.

My invention is illustrated in the accompanying drawings forming part ofthis application in which- Figure 1 is a plan lview of the device, Fig.2 is a view of the under side of the operative mechanism, Fig. 3 is asection along the line 3 3 of Fig. 2, Fig. 4 is a section along the line4 4 of Fig. 3, Fig. 5`is a face view o1' the number disk, Fig'. '6 is anenlarged plan view of a portion of the device showing the apparatus inone position, Fig. 7 is a view` similar to Fig. 6 showing the apparatusin another position, Fig. 8 is a section along the line 8-f8 of Fig. 1lookingin the direction of the arrows, Fig. 9 isa section` along theline 99 of Fig. 8, Fig. 10 is an enlarged section along the line 10-10of Fig. 3, Fig. 11 is a plan view of a modified form of the device, andFig. 12 is asection along the line 12-12 of Fig. 11.

In carrying out my invention I provide a casing preferably of metal andof substantially triangular cross section, as shown in 55 Fig. 8. Inthis figure it lwill be seen that there is an inclined front plate 1having an integral back portion 2, these parts being secured to a bottommember 3. The latter is provided with a peripheral iange 3X which formsa stiffening member-and also convenient means for attachment. The endsof the casing consist of castings such as that shown at 5 in Fig. 9,these castings being provided with recesses 5x for the nuts 6 oflongitudinal brace bars 7 Referring now particularly to Fig. lit will beseen that the plate 1 may be provided with one or more clrcular openings8 bordered by a series of radially extending lines 9, which divides theedge of the wheels adjacent to the opening into 100 parts, these partsbeing designated by numerals 10, which range from zero to 99 inclusive.Although in Fig. 1 I have shown two openings, it will be understood thatthis is merely for the sake of convenience in having two separate addingmachines on one plate, each of these machines being otherwise entirelyseparate and distinct from each other. A esription of one therefore willsuffice for ot Referring now particularly to Fig. 5, it

' will be seen that I have provided a disk 11 of substantially circularshape, the edge of the disk, however, being formed in the manner of aspiral such as an involute and being provided with a downwardly turnedflange 11a shown in dotted lines in Fig. 1 and in full lines in Figs. 3and 8. The disk 11 is provided with an innercircular row. of openings11b and with a concentric row of similar openings 11F which arestaggered with respect to the openings 11b in order to permit a greaternumber of openings of a given size than if these openings were disposedat the same distance from the center of the disk. Each of these openingshas an indicating line 1ld which extends radially. The` openings arenumbered from zero to 99 by a concentric row of numerals 11. An outerconcentric row of openings 11t is provided for a purpose hereinafterdescribed. As will be seen from Fig. 3, these openings llf'are in aportion of the disk which is raised-r from that portion'bearing thenumerals. p A

'In Figs`."2 and@ I have shown a plate 12 which is spaced apart from theface plate by means of blocks or posts 13, the latter being held inposition by means of screws 14 or in any other suitable manner. Carriedby the plate 12 is a cylindrical housing 15, whose upper portion isflanged at 15X so that the housing may be riveted to the plate. This.housing forms part of a bearing for a central .pivot post 1G, which is'provided with a sleeve 17, the latter forming a retainer foranti-friction balls` 1S. The top part of the post is provided with ahead 1G which is flanged so as to receive and retain the disk 11 and awasher or strengthening disk 19. After these parts are placed inposition they are riveted as shown in the drawlngs. The lower portion ofthe pivot post 16 is recessed to receive a spring 20, while a ball 2l isdisposed at the bottom of the recess, the spring 20 resting upon theball. A central passage way 22 extends from the top of the pivot post tothe recess in which the spring 20 is disposed. At the bottom of thepivot post 16 are lateral projections 1Gb which serve to support theball retainer 17.

As will be seen from Figs. 2, 3 and 8 the U-shaped bracket 23 is,secured to the plate 12. This is provided with a transverse pivot bar 24upon which is pivoted a U-shaped frame member 25 extending normally atright angles to the U-shaped bracket 23, as shown in Fig. 3. Pivotedbetween the arms of the U-shaped frame member 25 is the shaft 26 of awheel 27 having teeth 27a. The shaft 26 bears a spiral spring 28, oneend of which is connected with the wheel 27, the other end beingconnected with a portion of the frame 25. The frame 25 bearing the wheel-27 is held in an upper position by means of a spring 29 secured to theplate 12 (see Fig. 3). A push rod 31 is pivotally connected at 32 totheframe 25 andeX- tends outwardly through an opening in the face plate 1,being bent laterally to provided a thumb portion, as shown in thedrawings.

As will be plainly seen from Fig. 3 the teeth 27a of the wheel '27 aredesigned to be engaged -by ,the downwardly depending iianges 11'L1 ofthe disk 11, and it is obvious that as, the disk 11 is turned the wheel27 will be rotated. f.,

The plate V1 is provided with an opening 33 through which numbers 34 onthe outer' faces of the teeth may be observed. This opening 33 isconnected with a slot 35 through which the numbers 11e ofthe disk 11 maybe observed-as they come into registration with the slot. A yprojection11k extends inwardly over the disk l1, as shown in Fig. 1, thisprojection extending ast Athe concentric rows of openings 11b an 11c ofthe disk.

At 36 in Fig. l I have shown an indicating handarranged to play over adial 37. This hand may be connected with the number wheel 27 in order toindicate the number of revolutions of the wheel.

and the latter is rotated in a direction op posite to that of the arrowshown in Fig. 1, the apparatus will have assumed the position shown inFig. 6 in which the number Zero on the wheel 27 appears in the openingimmediately adjacent to the edge of the disk 11, while the number doublezero appears in the slot 35. In adding a column of figures, as forinstance 7, 23, 89, 4G, 92, 61 and 33, the point of the pencil orimplement is inserted in the opening opposite nthe numeral 7, a slightpressure is applied downwardly while the disk is rotated in a clockwisedirection shown by the arrow until the implement comes into engagementwith the stop member 11k. The numeral 7 will now appear in the slot 35.In pressing down on the disk 11 the latter is moved slightly downwardlyagainst the tension of the spring 20 (see Fig. 3) to free it fromfrictional engagement with the under side of the plate. When the pencilis removed the plate springs back into position so as to hold the diskstationary by frictional engagement. turned precisely to the properposition I provide a rigid centering member 41 (see Fig. 4) which istapered 'to enter the openings 11t so as to bring the disk in the properposition. Furthermore this member tends to aid in retaining the disk inposition. When the disk 11 is moved downwardly as described, it is freefrom the centering mem-V ber 41. The pencil is now put in the openingcorresponding to the numeral 23 and the operation is repeated and so onwith therema'ining numbers. The rotation of the disk will cause therotation of the number Wheel 27 through the engagement of the flange 11with the teeth of the number wheel. Since the number wheel is onlyrotated one tooth for every revolution of the disk it will be apparentthat the figures on the number wheel represent hundreds so that in theexample just given when the machine has been operated the fi ure 3 willappear in the opening 33, while te numeral 51 will appear in the slot35, thus showing ata glance that the sum of the numerals is-351.

Of course, a wheel 27 of sufficient size might be employed'to have anygiven number of teeth, but in practice I prefer to em- In order that thedisk may beA ploy a wheel having forty teeth. One of these is largerthan the others. .This tooth is shown at 42 in Fig. 3. It v-is obviousthat when this tooth is reached there can be no further rotation in aclockwise direction of the wheel 27. The purpose of the indicating dial37. is to register the number of revolutions of the wheel 27 so thatwhen the wheel rapidly and since the action of the revolving disk uponthe number wheel is positive the machine is absolutely accurate.

As will be seen from Figs. 6 and 7 the edge of the disk 11 takes theplace of a pointer and the' eye can instantly see the proper number onthe wheel because it is immediately adjacent to the edge of the disk.This does away with the necessity of a pointer and permits. theoperation of the device in a much more rapid manner than with otherdevices in which the mechanism is more complicated.

In Figs. 11 and 12 I have shown a modified form of the device in whichthe plate 1 is provided with a bearing 15 similar to the bearing 15 inwhich a disky 11 similar to the disk 11 is mounted. A plate 12 has abracket 43 which carries a bearing 44 for the shaft 45 of a wheel 46.The opposite end of the'shaft is journaled in a bearing 47 in theplate 1. The wheel 46 is provided with teeth 46a which extend laterallyfrom the plane of the wheel and which are designed to be engaged by thedownwardly extending flange 11X of the disk 11. The plate l12 lbears astop member 48 arranged to engage a stop member 49 on the wheel 46. Thewheel 46 bears a wide tooth 50 against which the end of the shoulder 11yof the disk 11 engages when the wheel 46 is being rotated one turn.

The operation of this form of the device is similar to that alreadydescribed. In both cases the number of the tooth on the number wheelnearest the edge of the rotatable disk indicates hundreds, while thetens and units are indicated by the figures on the face of the diskitself. In Fig. 11 it reads 299, the 2 appearing on the number wheel 46and 99 appearing in the slot 35.

I claim:

1. In an adding machine, a rotatable disk having a laterally extendingspiral flange, a rotatable number wheel having a series of teetharranged to be engaged successively by the flange, the rotation of thedisk one turn serving to rotate the number wheel a distancecorresponding to one tooth, said number wheel being provided vwith anenlarged tooth,A whereby rotation of the disk is stopped when the flangeengages said tooth.

2. In'an adding machine, a rotatable disk, a rotatable number wheeldisposed adjacent to said disk and having a portion adapted to becovered by the disk, a laterally extending flange carried by the disk, aseries of numbered teeth carried by the number wheel and arranged to beengaged successively by the flange on the rotation o-f the disk, oneturn of the disk serving to rotate the number wheel the distance of onetooth and to thereby cover or uncover' one of the numbers carried by thenumber wheel, and means for holding the disk frictionally in any of itspositions, said last-named means comprising a spring on the side of thedisk facing the number wheel, and an abutment member on the oppositeside of the disk.

3. The combination with a rotatable disk having a laterally extendingflange formed in the manner of a worm, a number wheel having its axis atright angles to the axis of the disk, said number wheel being pro videdwith teeth having numbers on their outer faces, said teeth beingarranged to be engaged by the laterally extending flange and to be movedthe space of one tooth for each revolution of the disk, said disk beingmovable bodily along its axis of rotation, a spring for normally forcingthe body portion of the disk away from the wheel, and means on theopposite side of the disk for frictionally engaging the body portion ofthe disk.

' 4. The combination with a rotatable disk having a laterally extendingflange formed in the manner of a worm, a number wheel having its axis atright angles to the axis of the disk, said number wheel being providedwith teeth having numbers on their outer faces, said teeth beingarranged to be engaged by the laterally extending flange and to be movedthe space of one tooth for each revolution of the disk, said disk beingmovable bodily along its 'axis of rotation, a spring for normallyforcing the body portion of the disk away from the wheel, and a casingmember on the opposite side of the disk from the wheel adapted to engageand frictionally hold the disk in any of its positions.

5. The combination with a rotatable disk having a laterally extendingflange formed in the manner of a worm, a number wheel having its axis atright angles to the axis of the disk, said number wheel being pro--vided with teeth having numbers on their spring for normally forcingthe body por# posing to View the vtooth of the Wheel which tion ofthedisk away from the Wheel, a is in engagement with the flange of thedisk.

casing member on the opposite side of the JAMES F. KEY. disk from theWheel adapted to engage and Witnesses: frictionally hold the disk in anyof its posi- VILFRED M. PECK,

tions, said casing having an opening for eX- FRANCIS J. MIEDING.

